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s/ForcedLastUses/TransferLastUses/g
Register pass has the its last user, otherwise sometimes no one will claim LastUse. Handle transferred last uses from child pass manager. llvm-svn: 32589
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@ -250,7 +250,7 @@ public:
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/// Initialize available analysis information.
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void initializeAnalysisInfo() {
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ForcedLastUses.clear();
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TransferLastUses.clear();
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AvailableAnalysis.clear();
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}
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@ -330,12 +330,18 @@ public:
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cerr << "\n";
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}
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}
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std::vector<Pass *>& getTransferredLastUses() {
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return TransferLastUses;
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}
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protected:
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// Collection of pass whose last user asked this manager to claim
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// last use. If a FunctionPass F is the last user of ModulePass info M
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// If a FunctionPass F is the last user of ModulePass info M
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// then the F's manager, not F, records itself as a last user of M.
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std::vector<Pass *> ForcedLastUses;
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// Current pass manage is requesting parent manager to record parent
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// manager as the last user of these TrransferLastUses passes.
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std::vector<Pass *> TransferLastUses;
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// Top level manager.
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PMTopLevelManager *TPM;
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@ -853,7 +859,7 @@ void PMDataManager::addPassToManager(Pass *P,
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LastUses.push_back(PRequired);
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else if (PDepth > RDepth) {
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// Let the parent claim responsibility of last use
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ForcedLastUses.push_back(PRequired);
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TransferLastUses.push_back(PRequired);
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} else {
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// Note : This feature is not yet implemented
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assert (0 &&
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@ -861,8 +867,8 @@ void PMDataManager::addPassToManager(Pass *P,
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}
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}
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if (!LastUses.empty())
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TPM->setLastUser(LastUses, P);
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LastUses.push_back(P);
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TPM->setLastUser(LastUses, P);
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// Take a note of analysis required and made available by this pass.
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// Remove the analysis not preserved by this pass
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@ -1161,10 +1167,14 @@ FunctionPassManagerImpl_New::addPass(Pass *P) {
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// Add pass into new manager. This time it must succeed.
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if (!activeBBPassManager->addPass(BP))
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assert(0 && "Unable to add Pass");
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// If activeBBPassManager transfered any Last Uses then handle them here.
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std::vector<Pass *> &TLU = activeBBPassManager->getTransferredLastUses();
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if (!TLU.empty())
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TPM->setLastUser(TLU, this);
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}
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if (!ForcedLastUses.empty())
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TPM->setLastUser(ForcedLastUses, this);
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return true;
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}
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@ -1326,10 +1336,14 @@ ModulePassManager::addPass(Pass *P) {
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// Add pass into new manager. This time it must succeed.
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if (!activeFunctionPassManager->addPass(FP))
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assert(0 && "Unable to add pass");
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}
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if (!ForcedLastUses.empty())
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TPM->setLastUser(ForcedLastUses, this);
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// If activeFunctionPassManager transfered any Last Uses then
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// handle them here.
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std::vector<Pass *> &TLU =
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activeFunctionPassManager->getTransferredLastUses();
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if (!TLU.empty())
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TPM->setLastUser(TLU, this);
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}
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return true;
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}
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